Converter for treating matte.



W. H. HOWARD.

CONVERTER FOR TREATING MATTE.

APPLICATION FILED MAR. 2. m4.

Patented Sept. 21, 1915.

l 2 SHEETS-SHED l.

ixth woo COLUMBIA PLANOuRAPl-l 60., wASnINGToN, D. c,

W. H. HOWARD.

CONVERTER FOR TREATING MATTE.

APPLICATION r1150 MAR. 2. 1914.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH co, WASHINGTON, D. c.

WILLIAM H. HOWARD, OF GARFIELD, UTAH.

CONVERTER FOR TREATING MATTE.

Specification of Letters Patent.

Patented Sept. 21, 1915.

Application filed March 2, 1914. Serial No. 821,925.

To all whom it may concern:

Be it known that I, VVILLIAM H. HOWARD, citizen of the United States, residing at Garfield, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Converters for Treating Matte, of which the following is a specification.

This invention relates to converters for the treatment of copper matte for the purpose of burning out the iron, sulfur and other impurities. Such converters usually consist of a steel shell, lined with basic mate rial, such as magnesite brick. The shell is cylindrical, and is arranged with its aXis horizontal, being supported on rollers so that it can be rocked backward to let the burning gas blow into the flue, and forward to pour off the slag. The molten matte is poured into the converter through a throat on the upper side of the shell, which serves also as the discharge opening for the gas. Ordinarily the hood which receives the gas and conducts it to the flue is stationary, and it must therefore have a large opening in order to cover the range of the converter as it is set at varying angles when blowing. Such hoods result in the entrainment into the flue of a great amount of air, some two or three times as great as the volume of the gases discharged from the converter. Owing to certain operating conditions, a close fitting hood is impracticable if applied to the throat at the top, and the object of my invention is to overcome this difficulty, and obtain a close connection between the converter and the hood.

My invention therefore consists in a converter having its discharge opening at one end, combined with a stationary hood concentric with the shell of the converter and telescoping over that end thereof in which the discharge opening is located. By this means, the eXit is always within the hood, irrespective of the angular movement of the converter. In order to avoid spilling of the charge during rotation of the converter, the discharge opening is located near the upper side of the shell.

In the accompanying drawings, forming part of this specification, Figure 1 is an end elevation, partly broken away, showing my improved converter and hood; Fig. 2 is a top plan view, on a smaller scale; Fig. 3 is a front elevation, partly in section; and Fig. 4 is a section of a portion of the hood.

The converter comprises a steel shell 1 lined with basic material 2. The shell is cylindrical, with its axis horizontal, and it is provided with two or more riding rings 3 which rest on rollers 4, so that the shell can be given angular movement forward and backward, by means of suitable machinery which is not shown in the drawings. In the upper side of the converter is a throat 5, through which the charge of molten matte is poured into the converter. The throat has a removable cover 6 which can be lifted by a chain 7 running to a suitable hoisting device, such as the motor-driven winding drum 8 on the crane 9. On the front of the converter is a spout 10 through which the slag can be poured off when the shell is rocked forward. A suitable blast pipe and twyers, and other necessary accessories, will be supplied in practice, of course, but are not illustrated in the present drawings.

One novel feature of my converter is the location of the discharge opening 11 for the smoke and gases in one end of the shell, near the upper side of the same. This opening can be made fully fifty per cent. larger than is practicable in the usual stack discharge. A cylindrical stationary hood 12 fits closely over this end of the shell, its circumference being concentric with that of the shell, so that the eXit opening is always within the hood no matter at what angle the converter may be. The end of the converter shell is provided with a water jacket 13 to prevent damage to the hood from heat, and the hood itself is preferably double-walled to form a water jacket, as shown in Fig. 4. For the observation of the flame a door 14 may be provided at any convenient point in the side of the hood. Suitable mechanism, such as the hydraulic motor 15, is provided for backing off the hood from the converter when any cleaning of the apparatus is necessary. From one side of the hood projects a short neck 16 which registers with an uptake 17 leading to the flue 18. This form of hood allows a maximum smoke discharge from the converter, and permits the outlet from the converter to be so proportioned as not to allow any spilling of the matte when the converter is tilted to pour off the slag. It maintains a practically tight connection between the converter and the flue at all positions of the converter, thus insuring the delivery into the flue of substantially undiluted gases, without the expenditure of any energy in moving an undesirable quantity of air, and Without affecting in any Way the capacity of the converter, or interfering With the output.

In accordance With the'provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus Which I noW consider to represent the best embodiment thereof; but I desire tovhave it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

Having thus described my invention, What I claim is 1. A converter for treating molten metal which comprises a horizontal cylindrical shell mounted to rotate on its horizontal axis and having its discharge opening for smoke and gases in one end near its upper side and eccentric to its axis, and a stationary hood into which said opening discharges.

2. A converter for treating molten metal Which comprises a horizontal cylindrical shell mounted to rotate on its horizontal axis and having its discharge opening for smoke and gases in one end near its upper side and eccentric to its axis, in combination With a Copies of this patent may be obtained for cylindrical stationaryv hood. having double Walls forming. a Water jacket and telescoping over the end of said shell. e

A. A converter for treating molten metal Which comprises a horizontal cylindrical 7 shell mounted to rotate on its horizontal axis and having its discharge opening for smoke and gases in one end near its upper side and eccentric to its axis, in combination With a cylindrical stationary hood having double Walls forming a Water jacket and'telescoping over the endjof said shell, and means for backing of? said hood from saidshell.

In testimony whereof I affix my signature in presence of tWo Witnesses.

' V lVILLIAh/I H. HOl/VARD.

Witnesses:

H. P. BRADFORD, G. D. PAINE;

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

